Annular anvil for a surgical stapler



FIG. 1 is a front elevational view of an annular anvil for a surgical stapler showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a left side elevational view thereof. 

The ornamental design for an annular anvil for a surgical stapler, as shown. 